Oil-well apparatus



J. NORBYE.

Oll. WELL APPARATUS.

APPLICATION rHLED JUNE 24, .1919.

Patented Aug. 30, 1921.

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III-.gallll JULIUS NORBYE, OF MINNEAOLIS, lVlCINlNESO'IA.l

OIL-WELL APPARATUS.

Specification of Letters Patent. Patented Aug'. 30, 13921.

Application filed June 24.-, 1919. Serial No. 306,507.

T0 @ZZ wko/m. t may concern.' Be it known that I, JULrUs Nonrn, acitizen of the United States, residing at Minneapolis, in the county ofHennepin and State of Minnesota, have invented certain new and usefulImprovements in OillVell Apparatus, of which the following is aspecification.

My invention relates to oil-well apparatus and an obj ect is to providemeans for closing at will the passageways extending through thewell-casing at onepor more sand levels in case no oil is being obtainedat these levels. When the passageways at the levels from which the oilis exhausted have been closed, the pumping ofoil'from the other levelsmay continue in an eflicient manner since the entrance of air into thewell-casing at the levels from which no oilis being obtained isprevented.

The full objects and advantagesof my invention will appear in connectionwith the detailed description thereof and the novel features embodied inmy inventive idea will be particularly pointed out in the claims.

In the accompanying drawings, which illustrate the application of myinvention in one form,-

Figure 1 is a sectional view of a well with my apparatus shown inelevation. Fig. 2 is a vertical sectional view of a portion of awell-casing on a larger scale. Fig. 3 is a sectionalelevational view ofthe top portion of my apparatus on a still larger scale.V Fig. 4 is aView in cross-section on the line 1 -1l of Fig. 2 drawn to an enlargedscale.

Referring to the drawings, 10 designates imperforate sections of awell-casing, the latter having perforated sections 12 which connect thesections 10. The perforated sections 12 are placed at desired positionsto correspond with dilferent sand levels desig; nated at 14. A pumpcylinder 16 is mounted within the pump-casing and held spaced therefromby spider arms 18. The bottom of the cylinder is provided with anopening 20 provided with arms 22 which near the center are joinedtogether bv ka ring 24: which serves as a guide for the valve stem of avalve 26. Working in the cylinder is a plunger 28 having a valve 30 andprovided with a pump rod 32 passing through a stuffing-box 33 at the topof the casing and reciprocated in any well-known manner. The 4top of thecylinder 16 is secured to the well-casing 10 by an airtight joint whichis provided with stuffing boxes 34 through which extend rods 36. The

said jointmay be provided with any desired number of holes as indicatedat 38 to receive rods 36, and if some of these holes are not in use toaccommodate a .rod they may be closed by means of plugs. vThe rods 36extend down between the cylinder 16 and the casing 10, and secured totheir lower ends are slides l0 'which may be positioned atdifferentdistances fromA the top of the well corresponding to the depth of thesand levels. These slides fit in air-tight manner within .the casing andare of suiicient length to cover the kadj acent perforated section 12when slid thereover. The upper portions of the rods 36 extend throughstuffingboxes 42 in the top. of the casingand to the upper ends of therods are .attached racks 44. Journaled on the pump-head 46 are pinions4:8 which mesh with the racks. Secured to the shafts of the pinions arecrank handles 50 upon the vturning of which the rods 36 and the slides10 may be moved up or down. Dogs 52 engage the teeth of the pinions toprevent rotation except when the dogs are released.

The operation and advantages of my invention will be obvious from theforegoing description. An efficient manner in which my apparatus may beinstalled and employed I is as follows. In putting down a test well thedistance of the different sand levels below the surface andthe thicknessof these levels is noted. Y A well may then be put down close to thetest well. In assembling the well-casing it is made up of imperforateand perforated sections so arranged that when the wellcasing reaches itsfinal position the perforated sections 12 will be located at the sandlevels 14 and of substantially the same height as the thickness of theselevels, while the imperforate sections willextend from the top of'onelevel to the bottom of the next level. The slides 40 are placed in thecasing adjacent the perforated sections and each particular slide ismade a little longer than the perforated section with which it isintended to coperate, so that it may be made to cover the same in anair-tight manner. An air-tight fit may be insured by the use of packingrings if desired. When a well is constructed in this manner one or morelevels may be shut off at any time and the pumping' continued from theother levels.

I claim:

1. An oil well apparatus comprising a well-casing made up of imperforateand perforated sections, said perforated sections be ing located atdierent sand-levels and each having a length substantially the same vasthe thickness of the adjacent level, movable members adjacent saidperforated sections for covering and uncovering the perforationstherein, and means mounted at the top of the well for independentlyoperating said movable members.

2. An oil well apparatus comprising a well-casing made up of imperforateand perforated sections, said perforated sections being located atdifferent sand-levels and each having a length substantially the same asthe thickness of the adjacent level, movable means adjacent saidperforated sections for covering and uncovering the perforationstherein, a pump cylinder mounted in said casing in spaced relationthereto, separate operating means for each of said movable membersmounted at the top of the well, and

connections between said operating means and the correspondingy movablemembers, said connections passing between said casing and said cylinder.

3. Any oil well apparatus comprising a well casing made up ofimperforate and perforated sections, said perforated sections beinglocated at different sand levels and each having a length substantiallythe same as the thickness of the adjacent level, slides within saidwell'casing and adjacent said perforated sections, rods attached to saidslides, and means mounted at the top of the well for independentlyoperating said rods whereby said slides may be separately moved in orderto cover or uncover said perforated sections.

In testimony whereof I hereunto affix my signature.

JULIUS NORBYE.

